KDF 1.2-150-500-W1-115 Bosch Rexroth Indramat
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MPN: R911226019
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The Bosch Rexroth Indramat KDF 1.2-150-500-W1-115 is part of the KDF Variable Frequency Drives series and operates with a digital velocity loop. It features a motor power rating of 25 horsepower, rated current of 150 amps, and uses forced ventilation cooling with a blower fan voltage of 115 VAC. This drive accepts velocity commands in analog form and provides 16-bit parallel command inputs.
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Product Description:
The KDF 1.2-150-500-W1-115 is a variable frequency drive produced by Bosch Rexroth Indramat and positioned within the KDF Variable Frequency Drives series. As a power electronics module, it modulates the output frequency and voltage delivered to three-phase motors so automated equipment can adjust shaft speed and torque on demand. Placed between the line supply and an AC motor, the drive supports closed-loop velocity control, reduces inrush current, and improves efficiency during partial-load operation. Because output frequency and voltage change together, the drive can maintain controlled motor behavior across a wide operating range.
Electrical ratings show how the drive interfaces with both the supply and the motor. The internal blower fan operates from 115 VAC, providing dedicated airflow for the heat sink regardless of line conditions. For dynamic speed regulation, the controller uses a digital velocity loop that samples feedback at a high rate to minimize steady-state error. Connected motors may reach up to 25 hp, and the inverter delivers a continuous output of 150 A at nominal line and load current. Command data transferred over the parallel port are packed into 16-bit words, allowing start, direction, and fault signals to be handled with minimal delay.
Installation planning also considers auxiliary current and signal format. The control section draws up to 100 A from the upstream breaker during operation, so cable sizing and protective devices must match the electrical load. Heat is removed through forced ventilation, so airflow paths must remain unobstructed in tight cabinets. For process controllers that use an external reference, the velocity channel accepts a ±10 V analog command, which the digital control loop converts into pulse-width patterns for motor regulation. This input format is common in industrial control systems and works well with stand-alone process controllers.
Frequently Asked Questions about KDF 1.2-150-500-W1-115:
Q: What blower fan voltage does the KDF 1.2-150-500-W1-115 use?
A: The KDF 1.2-150-500-W1-115 has a blower fan rated at 115 VAC.
Q: What type of control loop does the KDF 1.2-150-500-W1-115 feature?
A: This drive operates with a digital velocity loop control system.
Q: How is the KDF 1.2-150-500-W1-115 cooled during operation?
A: Forced ventilation is used as the cooling method for this model.
Q: What is the maximum motor power supported by the KDF 1.2-150-500-W1-115?
A: The KDF 1.2-150-500-W1-115 is rated for motor power up to 25 horsepower.
Q: How many parallel command bits does the KDF 1.2-150-500-W1-115 support?
A: This drive accepts 16-bit parallel command bits for input.
